Fortigate HA / Active/Active to Active/passive

[Moustafa_Ibahem]

Hello Team , 

i have a migration to change the HA deployment of HA Fortigate from Acitve /Active to Active passive . 

i have about 7 VDOM created .

what should i do to do like this changes without affecting the services . 

for sure it will be done through maintenance window . 

thanks . 

Moustafa